Loose-leaf-binder post.



F. H. GRUMP. LOOSE LEAF BINDER POST. APPLICATION FILED-AUG.14, 1909'.

I nvmvm/a' Patented Dec. 21, 1909 WITNESSES (X -6} MW ATTORNEYS ANDREWa. GRAHAM co U-UYNOGRAPHERS. WASNINGYON. w. c.

FRANK H. CRUMP, OF LOS ANGELES, CALIFORNIA.

LOOSE-LEAF-BINDER POST.

Specification of Letters Patent.

Patented Dec. 21, 1909.

Application filed August 14, 1909. Serial No. 512,896.

To all whom it may concern:

Be it known that I, FRANK H. CRUMP, a citizen of the United States, anda resident of Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented certain new and useful Improvements inLoose-Leaf-Binder Posts, of which the following is a specification.

My invention is an improvement in loose loaf binder posts and consistsin certain novel constructions and combinations of parts hereinafterdescribed and claimed.

The object of my invention is to provide binder posts of the ordinaryconstruction, with a head which will so engage the top binder plate asnot to protrude through it.

A further object is to so construct the head of the bolt that the bolt(male and female) will remain together when the top cover has beenremoved.

A further object is to provide a head which will hold the two covers atfixed dis tances apart.

A further object is toprovide a binder post for use with a round holesheet, which will not come off the post though held loosely between thecovers.

Referring to the drawings forming a part hereof Figure 1 is aperspective view of the improvement, Fig. 2 is a longitudinal section ofthe post, in place, Fig. 3 is a similar view with the post detached.Fig. 4 is a similar View of the post. Fig. 5 is a view of a modifiedform of post.

The embodiment of the invention shown in the drawings consists of a body1, which is substantially cylindrical in shape, and is provided at oneend with a threaded lug 2, and at the other with a longitudinalinternally threaded recess 3. At approxi mately its center, the post isprovided with diametrically opposite apertures 4, for engagement by aspanner, or like instrument, to turn the post, to engage and disengageit from the binder plates. The binder plates 5 and 6, are arranged ateach end of the post, and the plate 5 is provided with a threadedopening 7 for engagement by the lug 2, while the plate 6 is providedwith a threaded opening 8, which registers with the recess 8 when theparts are in proper position. A screw or post head is provided forsecuring the plate to the post, the said screw consisting of a threadedstem 10, which is adapted to pass through the opening 8, and engage therecess 8, and a head 11, which is cylindrical and externally threaded asshown in Figs. 2 and 3.

It will be evident from the description, that by introducing the bits 13of the key 14 into the apertures 12, and turning the head, it may beengaged or disengaged from the plate and post, and when screwed home theouter face thereof will be flush with the outer face of the plate.

In the use of the device, the posts are inserted in the openings of theplate 5, and tightened, which may be done by means of a pin engaging theopenings 4. The heads 9 are then partially inserted in the posts, afterwhich the loose leaves 15, which are provided with openings 16 for thepassage of the posts, are placed thereon. After the sheets are allinserted, the plate 6 is engaged with the heads, and the screws areturned, Which draws the plate down, and turns the head home into thepost. When in this position, the sheets or leaves are firmly held, andthe binder plates present a smooth outer face.

In Fig. 5 is shown a modified form of post the male part being of thesame diameter throughout, the body being left hand threaded and the headright hand threaded.

I claim:

1. A device of the class described, comprising upper and lower binderplates having spaced threaded openings, the openings of the upper platebeing threaded in the opposite direction to the openings of the lowerplate and registering therewith, binder posts each having a threaded lugfor engaging the opening of the lower plate, and a longitudinallythreaded recess in its upper end, the threads of said recess running inthe same direction as the threads of the opening in the lower plate, anda post head having a threaded stem for engaging the recess and athreaded head for engaging the opening of the plate, said head havingspaced apertures in its outer face, and the post having radial openingsintermediate its ends.

'2. A device of the class described, comprising upper and lower binderplates, and

posts for connecting the plates, each of saidposts having at one end athreaded stem and at the other a threaded longitudinal recess, and ahead for the post comprising a threaded stem for engaging the recess anda threaded head, the plates having threaded openings for engagement bythe lug and head respectively, the thread of the lug and stem running inthe same direction, and in the opposlte d1rect1on to the thread of thehead, said head and post having means where by they may be rotated,

. a threaded head, the plates having threaded openings for engagement bythe lug and head respectively, the thread of the lug and stem running inthe same direction, and in the opposite direction to the thread of the I.head.

4.111 a device of the class described, a binder post provided at one endwith a threaded stem and at the other with a threaded recess, a headcomprising a threaded stem i for engaging the recess, and a headthreaded in the opposite direction from the lug and recess, and bindingplates having openings for engagement by the head and lug.

5. In a loose leaf binder, a post consisting of one part having areduced externally right hand threaded portion at one end for engagementwith the right hand threaded openings of a bottom binder plate, and aninternally right vhand threaded portion at the other end for engagementwith a part provided with a right hand externally threaded portion atone end, the other end being externally left hand threaded forengagement with the left hand screw threaded openings of a top binderplate.

6. In a loose leafbinder, a post consisting of one part having a reducedexternally right hand threaded portion at one end for engagement withthe right hand threaded openings of a bottom binder plate, and aninternally right hand threaded portion at'the other end for engagementwith apart pro vided with a right hand externally threaded portion atone end, the other end being externally left hand threaded forengagement with the left hand screw threaded openings of a top binderplate, and provided with means for engagement with a tool.

FRANK H. CRUMP.

\Vitnesses THEODORE V. lyrrnnsox, JNo. F. HAYES.

